Available in three types: light, medium, and heavy, with load capacities of 1 ton, 4 tons, and 8 tons respectively. The center height of the light-duty trolley is 750mm, the medium-duty is 870mm, and the heavy-duty is 900mm. The front end of the trolley connects to the engine flywheel housing, compatible with all standard flywheel housings from SAE 0# to 6#. The rear end can be adjusted in three dimensions according to the engine size, thus accommodating the rapid installation and positioning of all imported and domestic engines.